Water gun



FIG. 1 is a perspective view of a water gun showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is another perspective view thereof.

The broken lines throughout the drawing figures and all areas within depict portions of the water gun that form no part of the claimed design. 

CLAIM The ornamental design for a water gun, as shown and described. 